From 2ba4b32ecf748d5f45f298fc9677fa46d1dd9aff Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Tue, 11 Nov 2008 16:00:06 -0500 Subject: lib80211: consolidate crypt init routines Signed-off-by: John W. Linville --- drivers/net/wireless/hostap/hostap_hw.c | 61 +----------------------------- drivers/net/wireless/hostap/hostap_ioctl.c | 43 +++++---------------- 2 files changed, 11 insertions(+), 93 deletions(-) (limited to 'drivers/net/wireless/hostap') diff --git a/drivers/net/wireless/hostap/hostap_hw.c b/drivers/net/wireless/hostap/hostap_hw.c index 066299fc925..0f27059bbe8 100644 --- a/drivers/net/wireless/hostap/hostap_hw.c +++ b/drivers/net/wireless/hostap/hostap_hw.c @@ -2788,46 +2788,6 @@ static void prism2_check_sta_fw_version(local_info_t *local) } -static void prism2_crypt_deinit_entries(local_info_t *local, int force) -{ - struct list_head *ptr, *n; - struct lib80211_crypt_data *entry; - - for (ptr = local->crypt_info.crypt_deinit_list.next, n = ptr->next; - ptr != &local->crypt_info.crypt_deinit_list; - ptr = n, n = ptr->next) { - entry = list_entry(ptr, struct lib80211_crypt_data, list); - - if (atomic_read(&entry->refcnt) != 0 && !force) - continue; - - list_del(ptr); - - if (entry->ops) - entry->ops->deinit(entry->priv); - kfree(entry); - } -} - - -static void prism2_crypt_deinit_handler(unsigned long data) -{ - local_info_t *local = (local_info_t *) data; - unsigned long flags; - - spin_lock_irqsave(&local->lock, flags); - prism2_crypt_deinit_entries(local, 0); - if (!list_empty(&local->crypt_info.crypt_deinit_list)) { - printk(KERN_DEBUG "%s: entries remaining in delayed crypt " - "deletion list\n", local->dev->name); - local->crypt_info.crypt_deinit_timer.expires = jiffies + HZ; - add_timer(&local->crypt_info.crypt_deinit_timer); - } - spin_unlock_irqrestore(&local->lock, flags); - -} - - static void hostap_passive_scan(unsigned long data) { local_info_t *local = (local_info_t *) data; @@ -3252,12 +3212,7 @@ while (0) INIT_LIST_HEAD(&local->cmd_queue); init_waitqueue_head(&local->hostscan_wq); - local->crypt_info.name = dev->name; - local->crypt_info.lock = &local->lock; - INIT_LIST_HEAD(&local->crypt_info.crypt_deinit_list); - init_timer(&local->crypt_info.crypt_deinit_timer); - local->crypt_info.crypt_deinit_timer.data = (unsigned long) local; - local->crypt_info.crypt_deinit_timer.function = prism2_crypt_deinit_handler; + lib80211_crypt_info_init(&local->crypt_info, dev->name, &local->lock); init_timer(&local->passive_scan_timer); local->passive_scan_timer.data = (unsigned long) local; @@ -3358,9 +3313,7 @@ static void prism2_free_local_data(struct net_device *dev) flush_scheduled_work(); - if (timer_pending(&local->crypt_info.crypt_deinit_timer)) - del_timer(&local->crypt_info.crypt_deinit_timer); - prism2_crypt_deinit_entries(local, 1); + lib80211_crypt_info_free(&local->crypt_info); if (timer_pending(&local->passive_scan_timer)) del_timer(&local->passive_scan_timer); @@ -3377,16 +3330,6 @@ static void prism2_free_local_data(struct net_device *dev) if (local->dev_enabled) prism2_callback(local, PRISM2_CALLBACK_DISABLE); - for (i = 0; i < WEP_KEYS; i++) { - struct lib80211_crypt_data *crypt = local->crypt_info.crypt[i]; - if (crypt) { - if (crypt->ops) - crypt->ops->deinit(crypt->priv); - kfree(crypt); - local->crypt_info.crypt[i] = NULL; - } - } - if (local->ap != NULL) hostap_free_data(local->ap); diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c index 29aebb67909..c40fdf4c79d 100644 --- a/drivers/net/wireless/hostap/hostap_ioctl.c +++ b/drivers/net/wireless/hostap/hostap_ioctl.c @@ -116,32 +116,6 @@ static int prism2_get_name(struct net_device *dev, } -static void prism2_crypt_delayed_deinit(local_info_t *local, - struct lib80211_crypt_data **crypt) -{ - struct lib80211_crypt_data *tmp; - unsigned long flags; - - tmp = *crypt; - *crypt = NULL; - - if (tmp == NULL) - return; - - /* must not run ops->deinit() while there may be pending encrypt or - * decrypt operations. Use a list of delayed deinits to avoid needing - * locking. */ - - spin_lock_irqsave(&local->lock, flags); - list_add(&tmp->list, &local->crypt_info.crypt_deinit_list); - if (!timer_pending(&local->crypt_info.crypt_deinit_timer)) { - local->crypt_info.crypt_deinit_timer.expires = jiffies + HZ; - add_timer(&local->crypt_info.crypt_deinit_timer); - } - spin_unlock_irqrestore(&local->lock, flags); -} - - static int prism2_ioctl_siwencode(struct net_device *dev, struct iw_request_info *info, struct iw_point *erq, char *keybuf) @@ -166,14 +140,14 @@ static int prism2_ioctl_siwencode(struct net_device *dev, if (erq->flags & IW_ENCODE_DISABLED) { if (*crypt) - prism2_crypt_delayed_deinit(local, crypt); + lib80211_crypt_delayed_deinit(&local->crypt_info, crypt); goto done; } if (*crypt != NULL && (*crypt)->ops != NULL && strcmp((*crypt)->ops->name, "WEP") != 0) { /* changing to use WEP; deinit previously used algorithm */ - prism2_crypt_delayed_deinit(local, crypt); + lib80211_crypt_delayed_deinit(&local->crypt_info, crypt); } if (*crypt == NULL) { @@ -189,7 +163,7 @@ static int prism2_ioctl_siwencode(struct net_device *dev, request_module("lib80211_crypt_wep"); new_crypt->ops = lib80211_get_crypto_ops("WEP"); } - if (new_crypt->ops) + if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) new_crypt->priv = new_crypt->ops->init(i); if (!new_crypt->ops || !new_crypt->priv) { kfree(new_crypt); @@ -3269,7 +3243,7 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev, if ((erq->flags & IW_ENCODE_DISABLED) || ext->alg == IW_ENCODE_ALG_NONE) { if (*crypt) - prism2_crypt_delayed_deinit(local, crypt); + lib80211_crypt_delayed_deinit(&local->crypt_info, crypt); goto done; } @@ -3317,7 +3291,7 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev, if (*crypt == NULL || (*crypt)->ops != ops) { struct lib80211_crypt_data *new_crypt; - prism2_crypt_delayed_deinit(local, crypt); + lib80211_crypt_delayed_deinit(&local->crypt_info, crypt); new_crypt = kzalloc(sizeof(struct lib80211_crypt_data), GFP_KERNEL); @@ -3326,7 +3300,8 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev, goto done; } new_crypt->ops = ops; - new_crypt->priv = new_crypt->ops->init(i); + if (new_crypt->ops && try_module_get(new_crypt->ops->owner)) + new_crypt->priv = new_crypt->ops->init(i); if (new_crypt->priv == NULL) { kfree(new_crypt); ret = -EINVAL; @@ -3503,7 +3478,7 @@ static int prism2_ioctl_set_encryption(local_info_t *local, if (strcmp(param->u.crypt.alg, "none") == 0) { if (crypt) - prism2_crypt_delayed_deinit(local, crypt); + lib80211_crypt_delayed_deinit(&local->crypt_info, crypt); goto done; } @@ -3533,7 +3508,7 @@ static int prism2_ioctl_set_encryption(local_info_t *local, if (*crypt == NULL || (*crypt)->ops != ops) { struct lib80211_crypt_data *new_crypt; - prism2_crypt_delayed_deinit(local, crypt); + lib80211_crypt_delayed_deinit(&local->crypt_info, crypt); new_crypt = kzalloc(sizeof(struct lib80211_crypt_data), GFP_KERNEL); -- cgit v1.2.3